The kit includes more than enough media to tumble a full load of glass in a 3 pound or larger rotary tumbler. The product can also be used in other sized tumblers with simple ratio adjustment. .
The tumbling process for rocks uses a three step process and these abrasive and polishing materials. The following four items are included.
One 3 oz. package extra coarse silicon carbide (36 grit) used in Step 1 (skip this step in a vibratory tumbler)
One 3 oz. package of coarse silicon carbide (60/90 grit) used in Step 2
One 3 oz. package medium silicon carbide (120/220 grit) used in Step 3
One 1.5 oz package pre-polish silicon carbide (500 grit) used in Optional Step 4 more precisely controls the amount of frost or haziness in your glass. People want a nice amount of frost but they also want smoothness. Pre-polish provides the smoothness effect better than the three coarser grit.